"Plot development" refers to the way a story unfolds and progresses. It involves how the events, actions, and conflicts in a narrative lead to its resolution or climax, making the story more interesting and engaging for the audience. Full definition
The first thing I want to get out of the way is that both games feature some of the worst storytelling, voice acting and plot development in modern video game history. (gamerstemple.com)
As that unfolds, it might be easy to forget that driving that kind of major plot development — either on a TV show or in real life — often requires bold vision. (inc.com)